Source: OFFICIAL RECORDS: Series 1, Vol 31, Part 1, Knoxville and Lookout Mountain
No. 1. 
Report of Maj. General Ambrose E. Burnside, U. S. Army, commanding Department of the Ohio. 
KNOXVILLE, Tennessee, October 23, 1863-9 a.m. 
GENERAL: On the 20th instant, Colonel Wolford's cavalry brigade, at Philadelphia, was
surprised by enemy's cavalry and driven back to Loudon, with a loss of six mountain howitzers
and a considerable number of men. Colonel Wolford reports his loss at 100. The enemy has been
driven back again beyond Philadelphia, and are said to be concentrating at Sweet Water a heavy
force of infantry, cavalry, and artillery. The reports of the number of the enemy are indefinite,
except as to the presence there of Stevenson's division of infantry and of some 3,000 or 4,000
cavalry. I have re-enforced the garrison of Loudon, and shall leave for there at once;from there I
will endeavor to telegraph you more definitely. We have had a good deal of rain. Trains late, and I
fear much of our supplies will be very badly delayed by high water and bad roads. It is reported
from several sources that a considerable force, under Joe Johnston, has left Bragg's army. 
A. E. BURNSIDE, 
Major-General. 
Major-General GRANT.